AGL app-framework-main up to 17.1.12 wgtpkg-zip.c install_widget toctou

Summaryinfo

A vulnerability was found in AGL app-framework-main up to 17.1.12 and classified as critical. This vulnerability affects the function install_widget of the file wgtpkg-zip.c. Such manipulation leads to toctou. This vulnerability is referenced as CVE-2026-37531. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in AGL app-framework-main up to 17.1.12 and classified as critical. Affected by this issue is the function install_widget of the file wgtpkg-zip.c. The manipulation with an unknown input leads to a toctou vulnerability. Using CWE to declare the problem leads to CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. Impacted is confidentiality, integrity, and availability. CVE summarizes:

AGL app-framework-main thru 17.1.12 contains a Zip Slip path traversal vulnerability (CWE-22) combined with a TOCTOU race condition (CWE-367) in the widget installation flow. The is_valid_filename function in wgtpkg-zip.c validates ZIP entry names but does not check for dot notation directory traversal sequences it only blocks absolute paths. The zread extraction function uses openat(workdirfd, filename, O_CREAT) which resolves dot notation values relative to the work directory, allowing files to be written anywhere on the filesystem. Critically, in function install_widget in file wgtpkg-install.c, extraction via zread occurs BEFORE signature verification via check_all_signatures. Even if signature verification fails, the error cleanup (remove_workdir) only deletes the temporary work directory files written outside via path traversal persist permanently.

The advisory is available at gerrit.automotivelinux.org. This vulnerability is handled as CVE-2026-37531 since 04/06/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-26685). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• AGL

Name

• app-framework-main

Version

• 17.1.0
• 17.1.1
• 17.1.2
• 17.1.3
• 17.1.4
• 17.1.5
• 17.1.6
• 17.1.7
• 17.1.8
• 17.1.9
• 17.1.10
• 17.1.11
• 17.1.12

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Threat Intelligenceinfo

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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